Lifting-jack handle



April 14, 1931- w. F. KRENZKE 1,801,012

LIFTING JACK HANDLE Filed Dec. 13, 1928 rg' wmfwow Patented Apr. 14, 1931 UNITED STATES 1min-:rrr` oFFicE WILLIAM F. KRENZXE, OF RACINE, WISCONSIN, ASSIGNOR T WALKER MANUFACTUR- ING COMPANY, 0F RACINE, WISCONSIN, A CORPORATION OF WISCONSIN LIFTING-JACK HANDLE Appncation inea December 13, 192s. semi Nu. 325,833. l

This invention relates to new and useful improvements in a lifting jack handle, and more particularly to a rigid extension handle adapted to be reciprocated vertically when operating the lifting jack, the handle being formed of a plurality of pivotally connected sections which may be folded into substantial parallelism with one an other in order to make a compact assembly when stored in the tool box. Improved means is provided for pivotally connecting the sections and holding same rigidly in alignment when the handle is extended.

More specifically, the pivotally connected 7 ends of the handle members have overlapping portions provided with inter-engaging projections and recesses, and the pivot pin is extensible so that the overlapping portions of the members may be separated to disengage the projections from the recesses when the handle is to be folded. i

The general object of this invention is to provide an improved folding ack handle oit the type briefly described hereinabove, and disclosed more in detail in the specification which follows.

In the accompanying drawing:

Fig. 1 is a side elevation of the handle when folded.

Fig. 2 is a plan view, on a smaller scale, of the handle when extended in operating position.

Fig. 3 is a side elevation of the extended handle, as shown in Fig. 2.

Fig. 4 is a detail central horizontal section taken substantially on the line 4-4 ot Fig. 3.

Fig. 5 is a view similar to Fig. 4 showing a modified form of the pivot pin.

The handle, in the example shown, comprises a pair of rigid members 1 and 2, each formed of a flat metal bar of the general proportions indicated in the drawings. The free end 3 of the member 1 is somewhat tapered, as shown, so as to engage the usual socket in the operating lever of the jack. This end 3 may be formed with a hole or slot 4, which may be used for hanging up the handle, or may be used for engaging the reversing pin on the jack when the jack is to be lowered. The free end 5 of the other handie member 2 may be twisted, as shown, so as to form a grip or handle.

On the opposite end of member 1 is formed a laterally extending projection or stud (l adapted to be received within a hole or opening 7 in the other handle member 2 when these end portions of the members 1 and 2 are overlapped, as shown in Figs. 4 and 5. Similarly, a laterally extending stud or projection 8 is formed on the end o member 2, adapted to be received within a hole or opening 9 in the member 1. The members 1 and 2 are formed, at a suitabledistance from the end projections 6 and 8, respectively, with pivot openings 10 and 11 to receive a pivot member or pin 12, here shownrin the form of a threaded bolt. Bolt 12 has a head 13 adapted to engage the outerface of one of the handle members, and a wing nut 14 is screwed on the other threaded end of the bolt to engage the outer face of the other handle member.

In the simpler form shown in Fig. 5, bolt 12 is formed with a continuous partially threaded stem, which extends through the two mating circular openings 10 and 11, which may be of the same size. In the form shown in Fig. 4, the opening 11 in the member 2 is made somewhat larger than pivot opening 1() and is noncircular so as to receive the correspondingly shaped non-cir cular head 15 on bolt 12, whereby this bolt is held against rotation in the member 2.

It will benoted that the `distance from pivot opening 10 in lnember 1 to the lateral projection 6 at the end of this member is less than the distance between pivot'opening 11 in member 2 and the projection 8 at the end of member 2. This permits the stud or proj ection 8 to swing outside of the stud 6 when the handle is folded, as shown in Fig. 1, thereby permitting a more compactA assembly. The openings or recesses 7 and 9 in the respective members must likewise be spaced an unequal distance from the pivot openings in order to accommodate the respective studs 6 and 8 when the handle members are aligned, as shown in Figs. 2 to 5 inclusive.

When the handle is in use, the wing nut 14 Y 'wvith the attaching means here; shown', the Y is screwed down tightly, as shown in Figs. 2 to 5, thus hol-ding the tWo Vhandle members against one another in parallel alignment. The engagement of the projections or studs 6 and 8 in the recesses 7 and 9, respectively, will hold the members 1 and 2 in rigid alignment. vWhen the handle is to be folded, it is merely necessary to unscreW the Wing nut 14, so that the length of pivot pin or bolt 12 will be extended -suilicjie'ntly to permit thek pro- Y jections 6 and 8 to be removed from the respective recesses 7 and 9, whereupon the members 1 and 2 may be rotatedaboiit the pin 12 to the folded position shown in Fig. 1*. The nut 14 may novv be again partially tightened so as to hold the members together in this folded position and prevent rattling.

Preferably the free `end 16 of the threaded portion of bolt 12 is nicked or flattened so as to prevent the complete removal of Wingnut 14. In this manner itis impossible for the nut to Work loosesuliciently to be lost. Y

While the handle here shown by Way of example consists of only tv'vo pivotall'y attached members, a handle of thisrlen'gth being sufficient for most purposes, if a longer handle i-sl desired or it is necessary that the handle be shorter When folded, a plurality of sections maybe pivotally attached to 'one another bythe means here shown for attaching the members 1 and 2. The overlapped ends of each pair of sections would be provided free extremities of the end sections being formed With the handle 5 and the jack engaging portion 3, respectively.

Y I claim:

A lifting jack handle consisting of alpairV of rigid handle members pivotally connected at lone end so that the members may beswnng into alignment or folded against one another in substantially parallel relation, the pivotally connected ends of the members being each formed with an opening spaced from openings.

the end vof the .member to receive 'apivot .is

member, there being a laterally extending projection formed on this end of each mem- Y ber, and a recess formed inl themember spaced Vinwardly 'from the pivot opening so as to receive the projection on theother mem- Y ber when therr'n'embers are in alignment, the distance from the pivot opening to the 'end projection beingjgreater on one member than on the `other so that the projections Will vclear one` another when the members are folded against vone another, 'and al longitudinally @Xfelb Pivot member' positionedin aie WILLIAM F.V KRENZKE. e 

